Attachment for shoe repair machines



Oct, 1, 1940. P, SPACONE ATTACHMENT FOR SHOE REPAIR MACHINES Filed July 19, 1938 mil 5,1 60% Patented Oct. 1, 1940 UNITED STATES PATENT OFFICE ATTACHIWENT FOR SHOE REPAIR MACHINES 3 Claims.

This invention relates to shoe repair machinery, and more particularly to an attachment for a finishing machine.

An object of this invention is to provide'an attachment for a shoe repair machine which is adapted to clamp the outsole against an abrading or scoring member, so that one side of the sole may be properly scored or roughened to receive glue or other adhesive so that the sole may be securely glued to the bottom of the'shoe. 7

Another object of this invention is to provide an attachment of this type which may be combined with any conventional shoe finishing machine so as to relieve the operator of the necessity of holding the sole against the abrading or roughening wheel with his hand.

A further object of this invention is to provide an attachment embodying few parts so that it can be constructed at a relatively small cost and so that a repair man having only a'relatively small business may apply the attachment to his machine and thus be able to speed up the finishing work preparatory to applying the sole to the bottom of the shoe.

With the foregoing and other objects in view, the invention will be more fully described hereinafter, and will be more particularly pointed out in the claims appended hereto.

In the drawing, wherein like symbols refer to like or corresponding parts throughout the several views:

Figure l is a fragmentary detail side elevation of an attachment constructed according to an embodiment of this invention mounted on a con- 35 ventional finishing machine, the machine being fragmentarily shown in dotted lines.

Figure 2 is a fragmentary detail front elevation of the upper portion of the attachment.

Figure 3 is a detail top plan of the attachment.

Referring to the drawing, the numeral I0 designates generally the frame of a shoe finishing machine which comprises supporting members II and upper and lower longitudinal bars I2 and I3, respectively. An abrading or roughen- 45 ing wheel 14 is mounted on a rotatable shaft I5, and a hood l6 engages partly about the wheel I4 and is connected to a suction pipe l1 so as to draw off the dust or fine particles.

The hereinbefore described machine 'is conventional, and is here shown and described as only one form of a finishing machine with which the hereinafter described attachment may be combined.

At the present time it is the practice to hold the sole S against the rotating wheel 14 by means of a hand, which results in a relatively uneven surface being formed on the sole S. In order to properly hold the sole S against the wheel [4 in a manner whereby the sole S may be roughened about one entire face thereof, I have provided a 5 clamping roller I8 which is rotatably mounted on a shaft IS. The shaft I9 is secured at the opposite ends thereof on the upper ends of a pair of rock levers'20 by means of nuts 2| or other suitable fastening devices.

The rock levers-20 are provided with upper arcuate portions 22, and relatively straight portions 23. The levers 20 are rockably mounted intermediate the ends thereof on pivots 24 which are secured in bosses 25 carried by a substantially 15 U-shaped yoke generally designated as 26. The pivots are preferably provided with threaded ends on which nuts 21 engage so as to tightly hold the pivots 24 in the bosses 25.

The opposite arms 28 of the yoke 26 are pro-. 20 vided on the free ends thereof with one portion 29 of a clamp which is adapted to engage an upper horizontal frame bar 30 of the repair machine, and the clamping portions 29 are tightly held on the bar 30 by means of a second clamp- 5 ing portion 3| bolted or otherwise secured to the clampingportions 29.

The bight of the yoke 26 is provided with extensions 32 having an arcuate seat 33 engageable with a frame bar 12, and the extensions 32 are 30 tightly held on the bar I2 by means of a clamping member 34. The clamping member 34 is of longitudinally arcuate construction, one .end thereof being pivotally mounted on a pivot 36 engaging between a pair of ears 31. A threaded member 38 having a knob 39 at its outerend is threaded through the outer or free end of the clamping member 34 and is adapted to engage the bar l2, as shown in Fig. l, at its inner end at a point below the axial center of the bar [2.

-The'yoke 26 may be held against movement longitudinally of the bar 30 by means of a pair of collars 40 securedto the bar 30 by means of set screws 4| or the like. A U -shaped member 42 extends below the levers 26, being provided 45 with bifurcations 43 on the free ends thereof which are pivotally secured by means of pivots 44 to the inner straight ends 23 of the levers 2.0.

The U-shaped member 42 is provided with an I enlargement 45in substantially the center of the 5p.

bight thereof in which the upper end of a lever: operating rod 46 is threadedly mounted. A look nut 41 is threaded onto the upper end of the-rod 46 so as to hold the rod 46 against movement relative to the U-shaped member 42. 55

The lower end of the lever operating rod 46 is threadedly mounted in a bushing 48 carried.

by a bifurcated member 49. A lock nut 50 is threaded onto the lower end of the rod 46 and holds the rod 46 against movement relative to the bushing 48. The bushing 48 and the bifurcated member 49 are pivotally secured as at 5| to the upper end of a rock arm 52, and the rock arm 52 is rockably mounted on a shaft 53 carried by a pair of bracket members 54. The bracket members 54 are secured to a lower frame bar I3 by means of clamping devices 55.

with the arm 52 and is provided on the upper side of the outer end thereof with a pedal 51. A

rearwardly extending bar 58 is formed with thearms 52 and 56, and a weight 59 is slidable' on the bar 58 and may be held againstmovement in its adjusted position by means of a set screw 60.

An adjustable stop member BI is threaded through aboss 62 is carried by the rock arm 52 and is adapted to engage a lug 63 carried by an arm-54. An opposed stop member 64'is threaded through a boss 65 carried by the arm 56 and is adapted to engage the opposite side of the lug 63 so as-to hold the lever or arm 56 against limited upward movement.

- In the use and operation of this attachment,

the yoke 26 may be secured in operative position as shown in full lines in Fig. 1 by means of the clamp-ingmember 34. The stop member 64 may be adjusted so that the weight 59 will normally hold the roller I8 in'inope'rative position. The sole S is inserted between the roller l8 and the wheel l4, and then the pedal 51 may be rocked downwardly with a foot so as to swing the roller l8 toward the wheel I4. The upper end of the sole S is securely held with one or both hands of the operator and then-moved up and down and laterally so as to contact the surface of the sole S about the entire area thereof with the wheel I4. The entire area of the sole may be roughened by initiallyholding the'upper end of the sole and then roughingth'e greater portion thereof, after which that portion of the sole be: low the roughing wheel I4 and the roller I8 may be grasped by the hand, or if desired the sole may be released from between the roller l8 and the'wheel I4 and then turned about with the initially roughened portion uppermost. Release of the foot from the pedal 5'! will permit the weight 59' to swing the roller I8 'away from the wheel I4 with the stop member 64 engaging the lug 63.

The set or stop screw BI is adjusted in the boss 62 in such a manner that when the pedal 51 is depressed to swing the roller I8 toward the roughing wheel I4 so as to hold the sole S thereagainst, the set or stop screw 6| will prevent undue cutting on the surface of the sole S. In this manner the set or stop screw 6| will limit the inward swinging of the roller l8 irrespective of the amount of pressure applied to the pedal 57. The lug GI projects laterally of the inner side of the arm 54, and on depression of the pedal 51 the set or stop screw 6| will engage the upper surface thereof, whereas when the pedal 51 is released the weight '59 will swing the pedal 51 upwardly until the set or stop screw 64 engages the underside of the lug 63. Atthis time the roller I8 is swung outwardly and downwardly to a:re1e'ased.or inoperative position, and the stop A forwardly extending lever or arm 56 is formed integrally member Si is spaced from the upper side of the lug 63.

When' it is desired to use the wheel I4 for other purposes the roller I8 may be swung downwardly and. out of the way, as shown in dotted lines in Fig. 1 by releasing the clamping member 34 and swinging the yoke 26 inwardly of the frame II].

This attachment can be manufactured at a relatively small cost, so that a small operator may incorporate this device with a machine now in use. This device can be applied to many of the machines now in use without change in either the attachment or the machine, but it will be understood that certain changes may be made in the supporting or attaching means in order to mount the device on certain types of repair machines.

The levers 20 may be connected together adjacent their outer or upper ends by means of a relatively wide bar 66 which may not only serve as a means for holding the levers 20 .together, but also as a means to prevent'the sole S from swinging outwardly, the inner or lower end of the bar serving as a guide for the sole S.

It will, of course, be understood'that various changes and modifications may be made in the details of construction of this invention, such changes and modifications being restricted only by the scope of the appended claims.

What is claimed is: 1

1. An attachment for a shoe repair machine havinga rotatable shoe sole roughening wheel, comprising a bracket, means for mounting one portion of said bracket to the machine, releasable holding means securing another portion of said bracket to the machine, a roller disposed with the axis thereof parallel with said wheel, means swingably mounting said roller on said bracket, a foot pedal, means rockably mounting said pedal on the machine, and means connecting said pedal to said roller mounting means.

2. An attachment for a shoe repair machine having a rotatable shoe sole roughening wheel, comprising a bracket, means for mounting one portion of said bracket to the machine, releasable holding means securing another portion of said bracket to the machine, a roller disposed with the axis thereof parallel with the axis of said wheel, a pair of levers rockably carried by said bracket, means connecting an end portion of said levers together, means rotatably mounting said roller between said levers for movement therewith from operative to inoperative position, a pedal, bracket means for said pedal, means rockably securing said pedalon said latter bracket means, means connecting said pedal to said levers, and a weight carried by said pedal whereby to normally hold said roller in inoperative position.

'3'. An attachment for a shoe repair machine having a rotatable shoe sole roughening wheel, comprising a U-shaped bracket, means for mountingthe free ends of said bracket to the machine, releasable holding means carried by the legs of the bracket for securing the bracket to the machine, a roller disposed with the axis thereof parallel with said wheel, means swingably mountingv said roller on said bracket, a foot pedal, means rockably mounting said pedal on the machine, and means connecting said pedal to said roller mounting means.

PAUL SPACONE 

